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Vaillant Sensor (TE, TS, TO) 0020127227

Vaillant

Vaillant Sensor (TE, TS, TO) 0020127227

Temperature sensor (TE, TS, TO) for Vaillant geoTHERM VWL 45/1, 65/1 and 75/1 air-to-water heat pumps.

At a glance

  • Appliance family: geoTHERM VWL air-to-water heat pumps
  • Also known as 1385213
Manufacturer part no.
0020127227
Showing prices

£328.94

£274.12 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Vaillant 0020127227 is a temperature sensor, designated TE, TS and TO, used across the Vaillant geoTHERM VWL air-to-water heat pump range. It measures system temperature at its fitted position and passes that reading to the appliance's control electronics. It is a service part for the 230V VWL models listed below.

Signs this part needs replacing

  • Temperature readings that disagree with a calibrated thermometer taken at the same point on the circuit
  • The heat pump short-cycling, or failing to reach its set flow temperature
  • Fault codes or lockouts relating to temperature sensing
  • Erratic or implausible temperature values shown on the appliance display
  • Defrost cycles running at the wrong time or not initiating at all

Before you order

  • Confirm the model number on the appliance data badge matches one of the fitments listed above
  • Check the sensor designation (TE, TS, TO) against the position you are replacing
  • Inspect the sensor lead and plug for mechanical damage or corrosion before condemning the sensor itself

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.